BACnet vs Modbus
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| Feature | Modbus | BACnet |
|---|---|---|
| Born | 1979 — Modicon | 1995 — ASHRAE |
| Architecture | Master-Slave | Peer-to-Peer |
| Designed for | Industrial devices | Buildings specifically |
| Complexity | Simple | Advanced |
| Native alarm support | No | Yes |
| Native scheduling | No | Yes |
| Best for | Meters, drives, sensors | Controllers, supervisors |
| Analogy | Share auto | City bus network |
Related Topics
- What is BMS integration? — how a BMS connects with VFDs, energy meters, BACnet/Modbus devices and other building systems
- How to design a BMS system step by step — the complete BMS design methodology covering site survey, IO list, controller selection, sequence of operations
- What is a Building Management System (BMS)? — fundamentals of BMS controls and architecture for HVAC, lighting, energy and access
- What is BMS commissioning? — the disciplined commissioning process that turns a BMS install into a working building brain
- Browse all Commissioning & Integration topics — more from this section of the EnSmart BMS Library
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